noun
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the fluid form of a substance in which it can expand indefinitely and completely fill its container; form that is neither liquid nor solid; a gas.
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any mixture of flammable gases used for lighting, heating or cooking; the cooking gas.
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various gaseous substances formed by living or decaying matter, esp. if formed in the stomach, bowels, etc.
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volatile, highly flammable, colourless liquid mixture of hydrocarbons produced by the fractional distillation of petroleum and used chiefly as a fuel in internal-combustion engines; gasoline.
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a lamp that uses the kerosene vaporised by pressure; a gas-lamp.
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(fig.) a false statement made with or without intent to deceive.